Detachable tread for pneumatic tires.



A. G. MASS.

DETACHABLE TREAD FOR PNEUMATIC TIRES.

APPLICATION FILED AuG.12,1915.

Patented July 24, 1917.

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Toi-all whom t may concer/n.'

I DETACHAB'LE TREAD, FOR PNEUVIATEEIG TERES. I

manina.

Be it known that l AUGUsT.G. MAse, a citizen of the United' States, residing 1n Cincinnati, in the county of Hamilton and Statev of' @him-'have' invented4 certain new and useful improvements in Detachable "Trfea'ds forPneumatic Tires, of which the jthe .pneumatic tube and the casing' .thereabout. "It is thefurther object of my invenfollowing is a specication.

My invention relates to detachable treads for pneumatic tires, and has for'jts object the provision -of novel means for protecting tion to provide an annular tread for the casing of an inflatable tire so arranged that the v'saine may befreplaced when worn, arranged' to beheld in place by the iniation of the 1niiatabletire-member and to beremov'ed upon i deflation' of said tire-member.'

v'llhe invention will be further readilyunldeltstrjod from the following description and claims, and from the drawing, 'of Lwhich lettera" '1 'Figure l represents a sideelevation-of a yvheel vprovided with my improved device,

' partly' brolren away for better illustration Figi; and at ofparts.

Fig. 2 is a eross-sectlon of the same on the i yline 2-2 of Fig. l. b@

Fig..x3 is a perspective view .ofthe tire portion of the vehicle wheel, partly broken away, one end of the part shown being represented in cross-section on the line 2 2. of

Fi a is anv edge view of the vehicle vvvhee ,'-partly broken away for better illustration of parts.

The body of the vehicle wheel is shown at 11,and in the present exemplic'ation .comprises a hub l2, spokes 13, and a felly M, all of usual construction. Y

16 lrepresents an inflatable tire, compris ing an inner inflatable tube 17 and an outer casin '18. The casing is shown placed on the w eel-body by quick detachable means, comprising a rim 21, which is an annular plate surrounding the felly and held in place in suitable manner, as by means of screws 22.

The rim comprises an annular clencher lange23 at one side thereof. At the other side thereof there is an annular groove 24. An annular detachable clencher @ange 25, which is a closed ring, ie received about the beads of the `innerotube.

` shown,

Speeiication of 4tietter's Patent.. i Patented July 243:, 13.91% I Application tiled August 12, 1.915. j Serial No. 451,111.

rim at the-annular groove 24. `The clencher ceived lin the annular groove 2i for locking 4vthe integra-l vdeta-chable clencher Harige 25 against displacement outwardly,-. so that,

fwhen the tire is inflated, the beads 'ofthe under 'the tire-ca`sin will be received clencher anges, and exert outwardpressure uponthesame for locking the tire 1n. place.

I'An annular apron 29 is arran ed to be received/ in theannular space 3() etween the outer casing vfor -protectingthe .Aninating valve 32v ofuusual construction is received through suitable holes in.

the; felly k14, the rim V2i ,and the annular apronl29,and` communicates' with and is se-` cured tothe inner tube for inating and de;

...flatingthe latter. i

,The outer casing is, preferably formedk up with lan inner carcass 36, `comprisin a. seriesof layers of fabric and rubber, an an outer rubber wall 37, the carcass and the outer wall bein integralwitheach other. Theannular periphery ofthe casin is vreferably formed substantiallycylin rica, as

shown' at 38, and provided with annular grooves 39, two of these` grooves being substantially triangular in cross-"sec-y tion.

Annular the outer annular periphery of the casing, held in place by the inflation of the tire, and provided with parts coacting with `thef'an-l integral shoes are received about y nular grooves. lwo `of these outer annular f i shoes are shownone at each rvside vof the tire. Each of the annular shoes preferably comprises a em'ble annular body/41, having an inwardly extending annular rib 42, this rib in the present instance being a closed annular rib 1 y A closed annulus 43, of webbing, is located in the inner portion of the body 4i, and surrounds the annular rib 4:2. It is wider than the rib. Surrounding the closed annulus 4:3 of webbing or fabric, one or more closed 4annuli i4 of wire are received, three of these closed 'wire rings being shown as surrounding the fabric ring 43 and the annular rib 42. An annular outer nular body. il, surreun srtion 45 of the `s body of the tire, @it

may/.if desired, be provided with an antiskidding surface 46,'shown' in the form of repetitions of: the letter A, formed by projections projecting outwardly from the outer annular periphery and sides of the body 41. These projections, extending inwardly' along thel sides of the annular shoes, increase the j anti-skidding property of the tire.

-The annular Shoes are held in place by the coaction'between the annular ribs 42 and the annular grooves 39, when the tire is inlated. These annular shoes Uprovide the wearingsurface for the tire, and raise the tire.

inflatable 'portion of the tire -fromthe ground, and thereby remove the inflatable portion fromicontact with the ground and any objects thereon tending to puncture the Wearing shoe', thetire is deiiated yby the opening ofthe valve 32. The deflation of the tire permits a collapsing 'of the casing of the tire to suiicient extent toallow the annular rib 4 2 to be slipped out of the annular -groove 39, thereby removing the annular able portion thereof is located under the shoe, that is, between the annular shoe and the rim of the wheel. The inflated cavity of the pneumatic tube projects laterally substantially throughout the'width of the annular shceat each side; of the wheel between planes perpendicular to the axis of rotation of thewheel in which the lateral boundaries of said respectiveannular shoes are/ located, thereby giving full effective cushioning to each of the annular shoes. A

The annular shoes are readily yieldable to accommodate various load and travel condi- If it is desired to remove lthe annular tions, and with the iniiatable tire parts form an easy riding structure. i

Having thus fully described my' invention, what I claim' as new and desire to secure by Letters Patent is:

1. In a detachable tread for pneumatic tires, thev combination of an annular rim, an iniiatable tire about said rim, spaced-apart annular wearing shoes about the outer periphery of said inflatable tire, each of said annular wearing 'shoes havin a vclosed strengthening ring of fabric an a series-of spaced-apart closed wire rings embedded therein, said outer periphery of said inflatable tire and said annular flexible wearing shoes having spaced-apart tongue and groove connections between them, said con-y nections located adjacent to the respective side-edges of said outer periphery, the inflating space of said infiatable tire located between all said tongue and groove connections and said rim, and said closed fabric rings being wider than said respective' tongue and groove connections and located between said series of closed wire rings in said respective yiiexible wearing shoes and said tongue and groove connections.

2. In a detachable tread for pneumatic tires, the combination of a rim, an inflatable tire about said rim, an annularwearing shoe about the outer 4periphery of said inflatable 'sof' tire, ,said wearing shoe having'. a closed strengthening ring of fabric and a series of spaced-apart closed wire rings embedded therein, said outer periphery of said inflatable tire and said annular wearing shoe having a tongue and groove connectionbetween them, and said closed*y fabric ring being wider than said tongue and groove connection and located betweensaid series of closed wire rings in said wearing shoe-and said'l tongue and groove connection.

In testimony whereof, I have hereunto signed my name in the presence of two subscribing witnesses.

' f AUGUST Gr. MASS. Witnesses:y

Gro. C. KUHN,r ANNA B. AnsTINGsTALL.

@oplos of this patent may be obtained for ve cents each, by adressing the Commissioner of Patents, 

